[SI-LIST] Deriving Output Hold Times
- From: Chris Bobek <cbobek@xxxxxxxxxx>
- To: "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Wed, 01 Aug 2001 15:16:40 -0700
Hi,
I was wondering if there is a way to estimate or derive an output hold
time specification from a datasheet or an IBIS model (if one is not
already specified). Assume the datasheet specifies clock-to-out
(min/max). Technically, I don't think you can use clock-to-out (min)
alone because there is a period of time where the data is invalid at the
driver pin. Maybe the derivation could be (clocktoout(min) - risetime)?
The reason I ask is that all my inputs have 1.0ns hold time
requirements. My busses are so short that trace delay alone won't meet
this spec. Of course, I can skew the clocks, but I only want to do this
as a last resort because of other unrelated problems this would cause.
Thank you very much,
Chris
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
